Notes S1 Trait expectations and covariances are given for the replicated F2 design with arbitrary dominance.

Notes S2 The detailed summary of model fits is given for all combinations of genetic background and QTL models.

Table S1 Key to variance components

Table S2 The standardized Akaike’s information criterion (AIC) values (top) and likelihood ratio tests (bottom) are given for each trait

Please note: Wiley-Blackwell are not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing material) should be directed to the New Phytologist Central Office.